The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2003
Filed:
Oct. 24, 2001
Applicant:
Inventor:
Hideyuki Tanaka, Aichi, JP;
Assignee:
The Pilot Ink Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43K 7/10 ;
U.S. Cl.
CPC ...
B43K 7/10 ;
Abstract
A spring ( ) for pressing a ball ( ) forward is disposed within a tip body ( ) and a holder ( ). The spring ( ) includes a straight part ( ) and a coil part ( ). The straight part ( ) is inserted into the tip body ( ), and the coil part ( ) is disposed within the holder ( ). A protrusion ( ) is provided on the inner surface of the holder ( ). The coil part ( ) climbs over the protrusion ( ) and its engagement and stopping are set up.